Elasticsearch X-Pack version 6.0.0-rc1

Deprecations

The xpack.security.authc.token.passphrase is deprecated. If this setting is
not used, the cluster automatically generates a key, which is the recommended
method. See Security settings.

Enhancements

Security

Added requirement for TLS/SSL when a cluster with security is running in
production. If you try to upgrade to a production license when security is
enabled, the upgrade is not successful until you configure TLS. For more
information, see
Setting Up SSL/TLS on a Cluster.

Added bootstrap check that enforces the use of TLS when security is enabled
and you are using a production license.

Bug Fixes

Machine Learning

Fixed problem with dropped or duplicated data when datafeeds used aggregations.

Fixed problems when model plot is enabled and there are sparse metrics.